Department of Food Science and Agricultural Chemistry
Macdonald Campus, McGill University
Ste. Anne de Bellevue, Quebec
Email: william [dot] marshall [at] mcgill [dot] ca
BSc Chemistry University of New Brunswick 1967
PhD Chemistry McMaster University 1973
Dr. Marshall is an analytical chemist with an expertise in trace element speciation. His research interests are in the field of environmental chemistry and toxicology as well as the development of remediation techniques for polluted matrices. Current research thrusts are directed to trace element speciation in biological materials, supercritical fluid extraction of metal ions and to simple sample preparation procedures prior to atomic spectrometry. Methods have been developed for the mobilization of heavy metals into supercritical carbon dioxide, for the speciation of arsenic, lead and selenium in biological media and for slurry-introduction atomic spectrometry.
Selected recent publications
Influence of various organic molecules on the reduction of hexavalent chromium mediated by zero-valent iron, Mario Rivero-Huguet, Marshall, W.D., Chemosphere, 2009, 76(9), 1240-1248.
Reduction of hexavalent chromium mediated by micron- and nano-scale zero-valent metallic particles, M. Rivero-Huguet and Marshall, W.D., J. Environ. Monit., 2009, 11, 1072 – 1079.
Reduction of hexavalent chromium mediated by micro- and nano-sized mixed metallic particles, M. Rivero-Huguet, Marshall, W.D., J. Hazard. Mater. 2009, doi:10.1016/j.jhazmat.2009.04.062
Rivero-Huguet, M., and Marshall, W.D., Uncertainties when using primary-secondary wavelength or primary-wavelength spectroscopy to monitor the course of hexavalent chromium reduction mediated by zero valent iron, Accred. Qual. Assur. 2008, 13, 711-716.
Characterization of DNA adducts from Lung Tissue of Asphalt Fume Exposed Mice by Nanoflow LC/Q-TOF MS. Wang, J., Marshall, W.D., Frazer, D.G., Law, B. and Lewis, D.M. Anal. Biochem., 2003, 322, 79-88.
Fragmentation pattern of DNA-Benzo(a)pyrene diol epoxide adducts characterized by nanoflow LC/Quadrupole time-flight mass spectrometry. Wang, J., Marshall, W.D., Law, B. and Lewis, D.M. Int. J. Mass Spectrom., 2003, 230, 45-55.
Recycle of thermomechanical pulp filtrate after the removal of metals: A study with EDTA. Ager, P. and Marshall, W.D. J. Pulp Pap. Sci. 2003, 29, 303-307.
Recycle of Thermomechanical Pulp (TMP) Filtrate Post Removal of Metals: a Study with DTPA. Ager, P., Lee, C.C. and Marshall, W.D. Can. J. Anal. Sci. Spectros. 2003, 48, 223-230.
Estimation of total polychlorinated biphenyl (PCB) compounds in soil/sediment by hydrogenolysis to dicyclohexyl. Ehsan, S., Prasher, S. and Marshall, W.D. J. Environ. Monit. 2003, 5, 544-648.
Detoxification of aryl-organochlorine compounds by catalytic reduction in supercritical carbon dioxide. Yuan, T., Majid, A. and Marshall, W.D. Green Chem. 2003, 5, 19-25.
Recycling of complexometric extractants to remediate a soil contaminated with heavy metals. Lee, C.C. and Marshall, W.D. J. Environ. Monit. 2002, 4, 325-329.
Dechlorination of pentachlorophenol in supercritical carbon dioxide with zero-valent palladium magnesium bimetallic mixture. Yuan, T. and Marshall, W.D. J. Environ. Monit. 2002, 4, 452-457.
Zero-valent metal accelerator for the dechlorination of pentachlorophenol (PCP) in subcritical water. Marshall, W.D., Kubatova, A., Lagadec, A.J.M., Miller, D.M. and Hawthorne, S.B. Green Chem. 2002, 4, 3-9.
Hepatic acute-phase response of healthy and partially hepatectomized rats to mycotoxins. Fouad, F.M., Mamer, O.A., Marshall, W.D., Sauriol, F., Shahidi, F. and Ruhenstroth-Bauer, G. Special Publication - Royal Society of Chemistry 2001, 274, Food Flavors and Chemistry), 552-563.
An approach to complexant recycling in softwood pulping. Ager, P. and Marshall, W.D. Can. J. Anal. Sci. Spectros. 2001, 46, 162-169.
Extractions of polychlorinated biphenyl (PCB) compounds from surfactant suspension/soil extracts with dechlorination on-line. Wu, Q. and Marshall, W.D. J. Environ. Monit. 2001, 3, 499-504.
High-pressure homogenization prior to slurry introduction electrothermal atomic absorption spectrometry for metal determinations in wood pulps. Ehsan, S. and Marshall, W.D. J. Anal Atom. Spectrom. 2001, 16, 1180-1184.
Approaches to the determination of polychlorinated biphenyl (PCB) concentrations in soils / sediments by dechlorination to biphenyl. Wu, Q. and Marshall, W.D. Int. J. Environ. Anal. Chem. 2001, 80, 27-38.
Dechlorination of pentachlorophenol in supercritical carbon dioxide with zero-valent silver-iron bimetallic mixture. Kabir, A. and Marshall, W.D. Green Chem., 2001, 3, 47-51.
Approaches to the remediation of a polychlorinated biphenyl (PCB) contaminated soil - a laboratory study. Wu, Q. and Marshall, W.D. J. Environ. Monit., 2001, 3, 281-287.
Approaches to soil remediation by complexometric extraction of metal contaminants with regeneration of reagents. Xie, T. and Marshall, W.D. J. Environ. Monit., 2001, 3, 411-416.
Reductive dechlorination of polychlorinated biphenyl compounds in supercritical carbon dioxide. Wu, Q., Majid, A. and Marshall, W.D. Green Chem., 2000, 2, 127-132.
Speciation of cadmium, copper, lead and zinc in contaminated soils. Wu, Q., Hendershot, W.H., Marshall, W.D. and Ge, Y. Commun. Soil Plant Anal., 2000, 31(9&10), 1129-1144.
Modified approaches to the complexometric extraction of metal ions into supercritical carbon dioxide. Ager, P., Diaz-Lopez, C. and Marshall, W.D. Can. J. Anal. Sci. Spectros., 2000, 45, 107-114.